yes i know how to multiply thank you for todays school lesson. Now maybe with out being a smartass you can look past what is advertised and answer a simple question. Fi is rated for a certain amount of power, yet they will handle more as long as it's clean, dd is the same, so is t3. all of which i have experience with. my yukon had 4 tss 15's rated at 1000rms. which is 4k, i had 7k on them for over a year. never so much as got them stinky. and pulled hella good numbers with them. Now i dont have any experience with dc, so i do not know if they are they same way. so do you have the experience to answer this simply question or are you just trying to be a math teacher